Inoperative after car wash
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Super Member
Joined: Nov 2003
Posts: 524
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From: Baltimore/DC area
2014 E350S4
Inoperative after car wash
I went through a gas station touchless car wash. Afterwards, my lane keeping assist and blind spot assist are now "inoperative." Anyone else had this happen? Should I expect that they will be functional in the morning or is this a sure dealer visit? And if so, is this a warranty item? TIA.
Out Of Control!!
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
This could be a warranty item
There is a tsb for this -- bad corroded wiring harnesses
Would just take to dealer if continues but if it clears up then you're fine
There is a tsb for this -- bad corroded wiring harnesses
Would just take to dealer if continues but if it clears up then you're fine
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From: Bay Area, CA
2010 E550
Thread Starter
Super Member
Joined: Nov 2003
Posts: 524
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From: Baltimore/DC area
2014 E350S4
I knew touchless car washes had chemicals that could damage the trim, but I didn't realize the manual actually had an explicit warning against it. Oh well. No time to do it myself and no desire to pay 5x to have a handwash done. Thanks, though.
This morning the car started and no warnings. Both systems operational again. My wife said that when it rains heavily the systems shut off because the cameras aren't able to clearly "see." Maybe it's a normal feature of the standard operation of the two systems?
This morning the car started and no warnings. Both systems operational again. My wife said that when it rains heavily the systems shut off because the cameras aren't able to clearly "see." Maybe it's a normal feature of the standard operation of the two systems?
Out Of Control!!
Joined: Jun 2004
Posts: 13,799
Likes: 3,228
2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
I knew touchless car washes had chemicals that could damage the trim, but I didn't realize the manual actually had an explicit warning against it. Oh well. No time to do it myself and no desire to pay 5x to have a handwash done. Thanks, though.
This morning the car started and no warnings. Both systems operational again. My wife said that when it rains heavily the systems shut off because the cameras aren't able to clearly "see." Maybe it's a normal feature of the standard operation of the two systems?
This morning the car started and no warnings. Both systems operational again. My wife said that when it rains heavily the systems shut off because the cameras aren't able to clearly "see." Maybe it's a normal feature of the standard operation of the two systems?
But bigger picture is that if it occurs again you need to take it in
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Super Member
Joined: Nov 2003
Posts: 524
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From: Baltimore/DC area
2014 E350S4
I think when it has happened in the past it said it was "inoperative," not "temporarily unavailable." I'll ask my wife. I guess I'll bring it in next time, but if it clears on its own, will it store an error code? Otherwise, won't the dealer just tell me that it's working and that they can't help?
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From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
I knew touchless car washes had chemicals that could damage the trim, but I didn't realize the manual actually had an explicit warning against it. Oh well. No time to do it myself and no desire to pay 5x to have a handwash done. Thanks, though.
This morning the car started and no warnings. Both systems operational again. My wife said that when it rains heavily the systems shut off because the cameras aren't able to clearly "see." Maybe it's a normal feature of the standard operation of the two systems?
This morning the car started and no warnings. Both systems operational again. My wife said that when it rains heavily the systems shut off because the cameras aren't able to clearly "see." Maybe it's a normal feature of the standard operation of the two systems?
You are probably somehow getting water in the wiring during rain. I would definitely take the car in for repair. It is a warranty item if your car is still under warranty.
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Joined: Nov 2003
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From: Baltimore/DC area
2014 E350S4
Blind spot monitoring does not use camera, it uses radar sensors installed in all four corners of the car so it is not about visibility during heavy rain.
You are probably somehow getting water in the wiring during rain. I would definitely take the car in for repair. It is a warranty item if your car is still under warranty.
You are probably somehow getting water in the wiring during rain. I would definitely take the car in for repair. It is a warranty item if your car is still under warranty.
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E 350
. Asking my mother sometimes works even better. 
